Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.
PAI · Fuel System
180234
In stock · ships from Knoxville
This is a fuel check valve for Cummins ISB diesel engines, designed to allow fuel to flow in one direction only and prevent backflow, which helps maintain proper fuel system pressure.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 1 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
While some inventory systems label this as a 'fuel pressure regulator', it is correctly a check valve, not a regulator. Verify fitment for your exact ISB application.
Part data verified against 3 catalog sources
Numbers this part supersedes or interchanges with. Showing 2 of 2.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It directly replaces Cummins part number 3941156 and is typically installed when a leaking check valve causes hard starting, loss of prime, or fuel pressure issues. The valve features a 9/16-18 thread, zinc-plated finish, and requires a separate sealing washer cup (PAI 136102) for installation.
Part Number: 180234
FUEL PRESSURE REGULATOR CUMMINS 3941156
Vendor: PAI Industries
Dealer: KP Services Crossville
Compatibility, alternatives, and more
